[Spce-user] CE 2.6 - send reply to contact

[Andrew Pogrebennyk]

Klaus,

you may be mixing up a few things. The SIP replies are sent by Via
header (to received IP and port from Via). There is no workaround.

On 09/20/2012 09:09 PM, Klaus Peter v. Friedeburg wrote:
> Hi,
> 
> I have problems to build up the following szenario:
> My PSTN-Provider have a SIP-loadbalancer with IP 1.1.1.1. This IP is the peering.
> But the replys must be send to an other the IP ex. 1.1.1.2 (written down in contact header)
> 
> How is a way to send my replys to the contact ?
> 
> I think I must use the fix_nated_contact() function but I don’t know where.
> Using CE 2.6
> 
> Her is an example of sip-packet:
> ############################################
> SIP/2.0 180 Ringing
> Via: SIP/2.0/UDP 2.2.2.214;branch=z9hG4bK59b8.88f2435c752ae730795757ff2fb41c0f.0
> Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bKWwU6ta5w;rport=5080
> From: <sip:123456789 at blabla.de>;tag=2B9E9B0D-505B668F000A7564-60852700
> To: <sip:123456791 at 1.1.1.1>;tag=505B668F-5683ACD-0AB9FC95
> CSeq: 10 INVITE
> Call-ID: F0F73B5AB9631DC5 at 212.101.37.17_b2b-1
> Record-Route: <sip:1.1.1.1;lr>
> Record-Route: <sip:2.2.2.214;r2=on;lr=on;ftag=2B9E9B0D-505B668F000A7564-60852700;ngcplb=yes>
> Record-Route: <sip:127.0.0.1;r2=on;lr=on;ftag=2B9E9B0D-505B668F000A7564-60852700;ngcplb=yes>
> Contact: <sip:1.1.1.2:5060;transport=udp>
> MIME-Version: 1.0
> Require: 100rel
> RSeq: 1
> Allow: CANCEL,INFO,OPTIONS,BYE,PRACK,UPDATE
> Content-Type: application/sdp
> Content-Length: 383
> 
> v=0
> o=hiQ9200 3743020120820205511 391249998 IN IP4 62.180.246.13
> s=Phone Call via hiQ9200 SIPCA
> c=IN IP4 1.1.1.3
> t=0 0
> m=audio 24246 RTP/AVP 8 0 102 101
> a=rtpmap:8 PCMA/8000
> a=fmtp:8 vad=no
> a=rtpmap:0 PCMU/8000
> a=fmtp:0 vad=no
> a=rtpmap:102 G726-32/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=sqn: 0
> a=cdsc: 1 image udptl t38
> a=sendrecv
> a=ptime:30
> ############################
> 
> Greeting
> 
> Klaus Peter
> 
> 
> 
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